Bug: Auto-detected transfers should never group 2 transactions where the receiver date is prior to the sender date

[zachgoll]

Given 2 transactions:

Date	Amount	Flow
2025-01-02	500	Outflow
2025-01-01	500	Inflow

The "outflow" (sender of the money) has a date after the "inflow" (receiver of money).

This should never be possible, but our "auto-matching" logic for transfers is not accounting for this. The current logic matches any 2 transactions that:

• Are opposite amounts
• Same currency
• Within 4 days of each other (to account for settlement delays w/weekends and holidays)
• From different accounts

We need to add:

• Inflow date is after outflow date